EP2462866A2 - Moniteur du rythme cardiaque - Google Patents

Moniteur du rythme cardiaque Download PDF

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Publication number
EP2462866A2
EP2462866A2 EP11193375A EP11193375A EP2462866A2 EP 2462866 A2 EP2462866 A2 EP 2462866A2 EP 11193375 A EP11193375 A EP 11193375A EP 11193375 A EP11193375 A EP 11193375A EP 2462866 A2 EP2462866 A2 EP 2462866A2
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EP
European Patent Office
Prior art keywords
heart rate
user
rate monitor
skin
processor
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
EP11193375A
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German (de)
English (en)
Inventor
James Buchheim
Arne Hennig
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Scosche Industries Inc
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Scosche Industries Inc
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Scosche Industries Inc filed Critical Scosche Industries Inc
Publication of EP2462866A2 publication Critical patent/EP2462866A2/fr
Withdrawn legal-status Critical Current

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    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B5/00—Measuring for diagnostic purposes; Identification of persons
    • A61B5/02—Detecting, measuring or recording pulse, heart rate, blood pressure or blood flow; Combined pulse/heart-rate/blood pressure determination; Evaluating a cardiovascular condition not otherwise provided for, e.g. using combinations of techniques provided for in this group with electrocardiography or electroauscultation; Heart catheters for measuring blood pressure
    • A61B5/024—Detecting, measuring or recording pulse rate or heart rate
    • A61B5/02416—Detecting, measuring or recording pulse rate or heart rate using photoplethysmograph signals, e.g. generated by infrared radiation
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B5/00—Measuring for diagnostic purposes; Identification of persons
    • A61B5/0002—Remote monitoring of patients using telemetry, e.g. transmission of vital signals via a communication network
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B5/00—Measuring for diagnostic purposes; Identification of persons
    • A61B5/02—Detecting, measuring or recording pulse, heart rate, blood pressure or blood flow; Combined pulse/heart-rate/blood pressure determination; Evaluating a cardiovascular condition not otherwise provided for, e.g. using combinations of techniques provided for in this group with electrocardiography or electroauscultation; Heart catheters for measuring blood pressure
    • A61B5/024—Detecting, measuring or recording pulse rate or heart rate
    • A61B5/02438—Detecting, measuring or recording pulse rate or heart rate with portable devices, e.g. worn by the patient
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B5/00—Measuring for diagnostic purposes; Identification of persons
    • A61B5/02—Detecting, measuring or recording pulse, heart rate, blood pressure or blood flow; Combined pulse/heart-rate/blood pressure determination; Evaluating a cardiovascular condition not otherwise provided for, e.g. using combinations of techniques provided for in this group with electrocardiography or electroauscultation; Heart catheters for measuring blood pressure
    • A61B5/024—Detecting, measuring or recording pulse rate or heart rate
    • A61B5/0245—Detecting, measuring or recording pulse rate or heart rate by using sensing means generating electric signals, i.e. ECG signals
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B5/00—Measuring for diagnostic purposes; Identification of persons
    • A61B5/103—Detecting, measuring or recording devices for testing the shape, pattern, colour, size or movement of the body or parts thereof, for diagnostic purposes
    • A61B5/11—Measuring movement of the entire body or parts thereof, e.g. head or hand tremor, mobility of a limb
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B5/00—Measuring for diagnostic purposes; Identification of persons
    • A61B5/68—Arrangements of detecting, measuring or recording means, e.g. sensors, in relation to patient
    • A61B5/6801—Arrangements of detecting, measuring or recording means, e.g. sensors, in relation to patient specially adapted to be attached to or worn on the body surface
    • A61B5/6802—Sensor mounted on worn items
    • A61B5/681—Wristwatch-type devices
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B5/00—Measuring for diagnostic purposes; Identification of persons
    • A61B5/72—Signal processing specially adapted for physiological signals or for diagnostic purposes
    • A61B5/7203—Signal processing specially adapted for physiological signals or for diagnostic purposes for noise prevention, reduction or removal
    • A61B5/7207—Signal processing specially adapted for physiological signals or for diagnostic purposes for noise prevention, reduction or removal of noise induced by motion artifacts
    • A61B5/721—Signal processing specially adapted for physiological signals or for diagnostic purposes for noise prevention, reduction or removal of noise induced by motion artifacts using a separate sensor to detect motion or using motion information derived from signals other than the physiological signal to be measured

Definitions

  • the present disclosure relates generally to health monitoring systems and methods, and more particularly to monitoring heart rate under various conditions of exercise.
  • a pulse is the rate at which the heart beats, measured in beats per minute (bpm).
  • Basil pulse is the pulse measured at rest. The pulse measured during physical activity is generally higher than the basil pulse, and the rise in pulse during physical exertion is a measure of the efficiency of the heart in response to demand for blood supply.
  • a person engaging in physical activity often wishes to monitor the heart rate via pulse measurement in order to monitor and/or regulate the degree of exertion, depending on whether the exercise is intended for fitness maintenance, weight maintenance/reduction, cardiovascular training, or the like.
  • a standard method of measuring pulse manually is to apply gentle pressure to the skin where an artery comes close to the surface, e.g., at the wrist, neck, temple area, groin, behind the knee, or top of the foot.
  • measuring pulse this way during exercise is usually not feasible. Therefore, numerous devices provide pulse measurement using any of a variety of sensors attached to the body in some fashion. Monitors attached to the wrist, chest, ankle and upper arm, are preferably placed over a near-skin artery, are common.
  • the method of measurement may involve skin contact electrodes.
  • a wireless heart rate monitor conventionally consists of a chest strap sensor-transmitter and a wristwatch-type receiver.
  • the chest strap sensor has to be worn around the chest during exercise. It has two electrodes, which are in constant contact with the skin, to detect electrical activities coming from the heart. Once the chest strap sensor-transmitter has picked up the heart signals, it transmits the information wirelessly and continuously to the wristwatch. The number of heart beats per minute is then calculated and the value displayed on the wristwatch.
  • the wireless heart rate monitor can be further subdivided into digital and analog, depending on the wireless technology the chest strap sensor-transmitter uses to transmit information to the wristwatch.
  • the wireless heart rate monitor with analog chest strap sensor-transmitter is a popular type of heart rate monitors. There is, however, a possibility of signal interference (cross-talk) if other analogue heart rate monitor users are exercising nearby. If that happens, the wristwatch may not accurately display the wearer's heart rate.
  • One type of analog chest strap sensor-transmitter transmits coded analog wireless signals. Coded analog transmission tend to reduce (but not eliminate entirely) the degree of cross talk while simultaneously preserving the ability to interface with remote heart rate monitor equipment.
  • a digital chest strap sensor-transmitter eliminates the problem of cross-talk when other heart rate monitor users are close by.
  • the digital chest strap sensor transmitter is engineered to talk only to its own receiver (e.g., wristwatch).
  • Strapless heart rate monitors are wristwatch-type devices that may be preferred by users engaged in physical training because of convenience and combined time keeping features. In some cases the user is required to press a conductive contact on the face of the device to activate a pulse measurement sequence based on electrical sensing at the finger tip. However, this may require the user to interrupt physical activity, and does not always provide an "in-process" measurement and, therefore, may not be an accurate determination of heart rate during continuous exertion.
  • the first type of monitor measures heart rate by detecting electrical impulses.
  • Some wristwatch-type devices have electrodes on the device's underside in direct contact with the skin. These monitors are accurate (often called ECG or EKG accurate) but may be more costly.
  • the second type of monitor measures heart rate by using optical sensors to detect pulses going through small blood vessels near the skin. These monitors based on optical sensors are less accurate than ECG type monitors but may be relatively less expensive.
  • Optical sensing related to pulse oximetry, may also be used.
  • the arrangement of heart rate sensor and display may be similar to that described above.
  • the method of measurement is based on a backscattered intensity of light that illuminates the skin's surface and is sensitive to the change of red blood cell density beneath the skin during the pulse cycle. Motion of the sensor may introduce noise that corrupts the signal.
  • a heart rate monitor comprising two main components.
  • a first wristwatch type device measures three categories of sensor signal, digitizes the signals, correlates them to a generated clock signal, encodes them for transmission, and transmits the encoded data to a second device.
  • An exemplary method of transmission may be Bluetooth, although other protocols may be employed, including hard wired signal transmission.
  • the second device may be, for example, a smart phone (e.g., an iPhoneTM or equivalent device equipped to transceiver wireless data) or other device, running an application to decode the transmitted data, process the signals to obtain a noise compensated heart rate, store data, and transmit a return signal to the first device on the basis of the processed signals.
  • Additional data may be collected by the first device, such as battery life, pulse signal strength, and the like, which may also be transmitted to the second device.
  • the second device may return signals to the first device to alert the user with status indicator, such as low battery, pulse rate too high/low, etc. More detailed information may be provided on the display of the second device.
  • audio data may be transmitted from the second device to audio earphones either coupled to the first device, or by further receiving a wireless signal such as via BluetoothTM.
  • FIG. 1 illustrates a heart rate user system 100.
  • the user system 100 may be worn on a user's wrist, but other locations besides the wrist, such as the ankle, arm or forearm may be used.
  • the user system 100 includes a user processing CPU 105, a user memory 110, a clock signal generator 115, a sensing system 120, a user transceiver 125, and a user interface 135.
  • the CPU 105 may be coupled to the other indicated components, for example, either directly or via a bus 140.
  • a user antenna 145 is coupled to the user transceiver 125.
  • the user antenna 145 may be a wireless connection to a remote processing system (discussed below), or it may be representative of a direct wired connection to the remote processing system.
  • a battery 150 is coupled to the user processor CPU 105, the user memory 110, the clock signal generator 115, the sensing system 120, the user transceiver 125, and the user interface 135 to power all functions of the indicated elements.
  • FIG. 2 illustrates a remote processing system 200 for receiving and analyzing signals transmitted from the user system 100.
  • the remote processing system 200 may comprise, for example, a smart phone such as the Apple iPhoneTM executing an application program to process the transmitted signals, as will be disclosed in more detail below.
  • the remote processing system 200 may alternatively be a console, such as a dedicate piece of instrumentation for communicating and interacting with the user system 100.
  • the remote console may be used in a hospital, a fitness facility, or the like.
  • the remote processing system 200 may be a smart phone, such as an iPhoneTM, executing a heart rate monitoring application 260 on a remote CPU 205, where the application 260 may be stored in a remote memory 210 coupled to the remote CPU 205.
  • the remote processing system 200 may also include a remote antenna 245 and a remote transceiver 225.
  • the remote CPU 205 may execute the application commands and process the signals received from the user system 100, and generate output signals to the user system 100 via wireless transmission such as BluetoothTM, or the like, or via hard wire communication, on the basis of the processed received signals.
  • FIG. 3 is a conceptual illustration of the sensing system 120 of the user system 100 of FIG. 1 .
  • the sensing system 120 includes a blood concentration sensing system 310, described in more detail below.
  • the blood concentration sensing system 310 senses this change in concentration in the blood vessels beneath the skin and transmits the signal level to the CPU 105.
  • the blood concentration sensing system 310 may also sense small motions of the user system 100 with respect to the user's skin, because the blood concentration sensing system 310 may be sensing information from a different area of blood vessels beneath the user's skin if the user system 100 moves relative to the skin. This component of the sensed signal may be regarded as noise, which may contaminate a true determination of the heart rate.
  • the sensing system 120 further includes a motion sensor 320.
  • the motion sensor functions in a manner analogous to a computer optical mouse, but is relatively insensitive to blood concentration near the surface of the skin.
  • the motion sensor 320 senses changes in the position of the user system 100 with respect to the skin and sends a signal corresponding to that motion to the CPU 105, but contains relatively no substantial signal due to blood concentration.
  • the signal from the motion sensor 320 and the signal from the blood concentration sensing system 310 may be correlated in time with the signal from the clock generator 115 to provide a compensated signal in which the noise contribution due to motion is substantially reduced.
  • the compensated signal may then be analyzed for a more accurate determination of heart rate.
  • the sensing system further includes an accelerometer 330.
  • the accelerometer 330 may be a chip-set comprising a plurality of sensing elements capable of resolving acceleration along three orthogonal axes. Microelectromechanical system (MEMS) sensors, capacitive sensors, and the like, are well known in the art of acceleration sensing.
  • the accelerometer 330 may provide information about the motion of the user system 100 with respect to the user's heart. For example, if the user system 100 is worn on the wrist, and the nature of the exercise requires the wrists and hands to rise above the heart, the consequent elevation may cause a drop in the minimum and maximum (min/max) of the blood pressure at the point of sensing relative to that which may be measured when the user system 100 is as the same level or lower than the heart. This information may be used to qualify or disqualify the blood concentration measurements if the measured min/max values fall outside an acceptable range for determining the heart rate.
  • min/max minimum and maximum
  • the accelerometer 350 may be used in making most effective use of the accelerometer 350. For example, if the exercise comprises bench presses, where the user's arms and hands are constantly being raised above the chest, placement of the user system at a relatively motion neutral location, such as an ankle or upper calf. The signal measured by the accelerometer 330 will not then indicate a shifting "baseline" for the effect of blood pressure on blood concentration measurements due to altitude change relative to the heart, and more data will qualify.
  • FIG. 4 illustrates a conceptual underside view 400 of the user system 100, showing elements of the blood concentration sensing system 310 and the motion sensor 320.
  • a photodetector 410 is positioned between two sets 420 of light emitting diodes (LEDs), although other light sources may be contemplated within the scope of the invention. Only one set 420 of LEDs is required, as a minimum, as discussed below, but a plurality of such LEDs can improve the sensitivity and performance of the user system 100.
  • the photodetector 410 and the LED set 420 are positioned in close proximity, e.g., adjacent, to the user's skin and close to each other.
  • the photodetector 410 has a spectral sensitivity that spans at least from green to red, or at least spanning the spectral bandwidths of the two LEDs.
  • the LED set 420 includes a green LED 424.
  • Green light is preferentially absorbed by red blood cells in the skin. Therefore, a systolic increase in blood pressure and vascular blood concentration during the course of a pulse may result in a decreased backscattered green light intensity. During the diastolic interval, blood concentration is lower, leading to an increased backscattered green light.
  • the sensed signal level provided by the photodetector 410 when synchronized with the clock signal generator 115, may be analyzed under the control of a computer program stored in the user memory 110 and executable on the CPU 105 to determine a periodicity of the min/max signals, and thus determine a heart rate.
  • a degree of motion of the user system 100 along the skin may occur. Because this changes the detailed microvascular network illuminated by the green LED 424, a motion signal, which may be regarded as noise, may be included in the backscattered green light. Therefore, a motion sensor independent of blood concentration is beneficial.
  • the LED set 420 includes a red LED 426.
  • Red light backscattered from vascular tissue in the skin is not substantially affected changes in blood concentration, and is not substantially sensitive to the pulsing of blood near the skin surface.
  • the red LED 426 and photodetector 410 may function in a manner similar to an optical mouse, which is sensitive to motion relative to a surface, which in the present case happens to be the user's skin.
  • the red LED 426 is used to sense small motion of the sensor with respect to the microvascular structure just beneath the skin.
  • the photodetector 410 may be a special purpose image processing chip that merasures pixel-to-pixel changes in light intensity to compute motion of the user system relative to the user's skin. Such motion is to be expected in the course of exercise. This may result in a variation in signal levels having a temporal spectrum consistent with the periodicity of physical motion and which corrupts the primary heart rate signal of interest.
  • both the blood concentration sensing system 310 and the motion sensor 320 with a common photodetector 410 is achieved by alternately firing the green LED 424 and the red LED 426 under control of the CPU 105, synchronized with the clock signal generator 115.
  • the photodetector 410 must have sensitivity to spectral bands including both LED colors.
  • the clock signal rate may be high enough, e.g., typically a kilohertz or more, that the two signals - for blood concentration and motion - may appear to be quasi-continuous, with enough granularity to extract sufficient detail from each - i.e., blood concentration and motion from the green LED 424 and motion only from the red LED 426.
  • One of the functions of the user CPU 105 may further include reading the battery level to the CPU 205 of the remote processing system 200 as transmitted, for example, via BluetoothTM, and returning a command to the user system 100 to display an indication that the battery level is normal or low.
  • Another function of the remote CPU 205 may be to determine, on the basis of the received sensor signals, whether the pulse signal peak values are too large (causing saturation) or two weak (causing poor signal-to-noise ratio (SNR)). If the detected pulse is two weak, the remote CPU 205 may provide feedback to the user CPU 105 instructing it increase the intensity of the LEDs by increasing the pulse peak power or pulse width, or reducing the intensity of the LEDs by reducing the pulse peak power or pulse width if the signal is saturating. Alternatively, the remote CPU 205 may provide feedback to the user CPU 105 instructing it to do the same.
  • SNR signal-to-noise ratio
  • normative values of blood pressure may differ for different people, e.g., different skin color and light absorption properties, and may also change significantly as the course of a variable exercise regimen progresses through different levels of activity. For example, when the user is engaged in a sports activity, blood pressure and blood concentration is usually higher, so less light is required to pick up a signal. Therefore, the pulse driven fluctuation of the green LED light is affected by blood pressure, and the current to the green LED may be controlled to conserve power.
  • the user CPU 105 may be to determine, on the basis of the sensor signals output from the photodetector 410, or the power applied to the LEDs, whether the pulse signal peak values are too large (causing saturation) or too weak (causing poor signal-to-noise ratio (SNR)). If the detected pulse is too weak, the user CPU 205 may increase the pulse peak power or pulse width, or reduce the pulse peak power or pulse width if the signal is saturating. Alternatively, the user CPU 105 may increase gain in circuitry coupled to the photodetector 410 or reduce gain if the signal is saturating.
  • the operation of the blood concentration sensing system 310 and the motion sensor 320 with a common photodetector 410 may be achieved by alternately firing the green LED 424 and the red LED 426 under control of the CPU 105.
  • the firing sequence may include a blanking period after the green and red LEDs are fired.
  • the user CPU 105 will cause, by way of example, the green LED 424 to fire, followed by the red LED 426, and then followed by a blanking period before the sequence repeats.
  • the remote CPU 205 may then determine on the basis of the received sensor signal for the blanking period the effect that sunlight is having on the measurements.
  • the remote CPU 205 may then compensate the received sensor signals for the green and red LEDs when computing the heart rate of the user, or provide this information back to the user CPU 105 in the form of feedback for adjusting the intensity of the green and red LEDS.
  • the user system 100 as shown in the underside view 400 may also include recharging ports 430 for recharging the user battery 150.
  • the user CPU 105 may be used to compute the user's heart rate based on information from the sensing system.
  • the user CPU 105 may use information from the motion sensor and the accelerometer to compensate the information from the blood concentration sensing system when computing the heart rate.
  • the CPU 105 may provide information to the user via the user interface based on the computed heart rate.
  • an indicator on the user interface may be enabled when the computed heart rate exceeds a maximum threshold set by the user.
  • the remote processing system 200 may be used to compute the heart rate based on information from the sensing system.
  • the information from the sensing system may be provided to the remote system 200 by the user transceiver 125.
  • the information may be received by the remote transceiver 225 in the remote system 200 and provided to the remote CPU 205 for processing.
  • the remote CPU 205 may then compute the heart rate using information from the motion sensor and the accelerometer to compensate the information from the blood concentration sensing system.
  • an exercise schedule may be created.
  • the remote interface 235 may be, for example, a touch screen, such as found on an APPLE iphoneTM, a smart phone keyboard and screen, and a screen, keyboard and mouse of a computer console.
  • a maximum estimated heart rate may be determined based on various factors, including the user's age.
  • a maximum estimated heart rate may correspond to an extreme level of performance, and different levels of performance may correspond to different ranges spanning from the maximum estimated heart rate down to a range corresponding to a resting state, so that a range of heart rates may be established for each range of exercise performance.
  • Typical ranges of performance may correspond to resting, moderate exercise (e.g., walking), up to an extreme range corresponding to a maximum recommended level of activity, keeping in mind that such levels are only guidelines, and subject to appropriate modification.
  • the remote processing system 200 CPU 205 may communicate via the transceivers 145 and 245 to the user system CPU 105 to signal when the received sensor signals indicate the heart rate is below, within, or above the selected exercise performance range. In this manner, the user may control and monitor his/her level of activity.
  • the user CPU 105 may control display features on the front face 500, away from the user's skin, which is thus accessible to the user.
  • a red light indicator 510 on the display face may indicate that the heart rate is above a prescribed range for a selected exercise performance, and the user should exercise more slowly.
  • a green light indicator 520 may indicate that the performance level is below the prescribed range, and the user should exercise harder. At an appropriate level of exercise, neither light may be on, indicating an appropriate level of exercise is obtained.
  • Other combinations of light indicators and colors may me contemplated within the scope of the invention.
  • the remote processing system 200 may also serve as an audio player (MP3, iPodTM, etc.) storing a number of music tracks, or accessing a number of radio stations, made available by an appropriate entertainment software application running on the remote processing system 200 .
  • an audio player MP3, iPodTM, etc.
  • the select button S 550 may provide entertainment selection functions, such as pause, play, etc.
  • the select button S 550 may serve as an emergency alert button. For example, repeated or continuously press S 550 may initiate a signal from the user system 100 to the remote processing system 200 to activate an alarm, such as an emergency alert phone message (911, private physician, or the like). If the remote processing system 200 is also equipped with GPS, the emergency alert message may also contain the location of the user, and vital statistics, such as the heart rate and/or high or low blood concentration level, which may indicate a high or low blood pressure, together with the identity of the user.
  • the remote system 200 may be carried by the user, for example, on a wrist, arm or waist strap, with viewing access easily available.
  • the remote system 200 may therefore provide on its display (not shown) more detailed information, such as heart rate, calories burned, distance run, and the like, as determined by the application.
  • FIG. 6 illustrates a method 600 of operating the heart rate monitor comprising the user system 100 and the remote processing system 200.
  • the user initiates and runs the heart rate monitoring application 260 on the remote processing system 200.
  • the remote processing system 200 communicates with and activates the user system 100 heart monitor functions stored in the user memory 110 executable on the user CPU 105.
  • the user system CPU 105 turns on operation routines controlling the sensing system 120 comprising the green LED 424, the red LED 426 and photodetector 410 and also the accelerometer operation routines in block 630.
  • the routines control the operation of the LEDs, i.e., the repetition rate, alternating timing of the green and red LEDs, pulse widths of the LED output, and photodetector circuitry.
  • the routines may also control the operation of the accelerometer 330 and associated circuitry.
  • the CPU 105 converts the analog signal from the photodetector , the accelerometer and the battery voltage to a digital signal that is then encoded for transmission as a data packet.
  • a signal is transmitted by the user system 100 CPU via the transceivers 225, 245, such as a BluetoothTM, and antennas 245, 345 to the remote processing system 200 including the blood concentration data, motion data accelerometer data, battery voltage, and clock signal. Alternatively, transmission may be via a hard wire link.
  • the remote processing system 200 CPU 205 processes the received data and may transmit various commands back to the user system 100 CPU 105. Among these include commands to turn on red or green LEDs on the front face of the user system to indicate to the user to exercise faster (green LED), exercise slower (red LED), and maintain the same level of exercise (no front LED lit).
  • the method functions continuously by returning, for example, to block 640, to obtain and encode the next packet of data.
  • the battery level may be indicated during charging. For example, when the user system is being charged through the charging ports 430, the green LED 510 may blink intermittently once for 25% charged, twice for 50% charged, three times for 75% charged, and steady on for 100% charged, or the like.
  • All operation conditions and exercise parameters may be visually presented on the user interface of the remote processing device 200, e.g., the touch screen of an iPhoneTM or computer screen.
  • the remote processing device 200 display may show a variety of data. Exemplary information that may be displayed include a numeric value of the measured (corrected) heart rate, a workout time indicator, a calorie counter, a level of performance indicator, exercise, pause and stop soft keys, and a music function soft key, all accessible using the multifunction key. Other functions may be contemplated as well.
EP11193375A 2010-12-13 2011-12-13 Moniteur du rythme cardiaque Withdrawn EP2462866A2 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US12/966,864 US20120150052A1 (en) 2010-12-13 2010-12-13 Heart rate monitor

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EP2462866A2 true EP2462866A2 (fr) 2012-06-13

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US (1) US20120150052A1 (fr)
EP (1) EP2462866A2 (fr)
CN (1) CN102781310A (fr)
CA (1) CA2762074A1 (fr)
WO (1) WO2012082749A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ITMI20130104A1 (it) * 2013-01-24 2014-07-25 Empatica Srl Dispositivo, sistema e metodo per la rilevazione e il trattamento di segnali di battito cardiaco

Families Citing this family (36)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2010003134A2 (fr) 2008-07-03 2010-01-07 Masimo Laboratories, Inc. Protrusion, source froide thermodynamique et protection pour améliorer les mesures spectroscopiques des constituants sanguins
US8630691B2 (en) 2008-08-04 2014-01-14 Cercacor Laboratories, Inc. Multi-stream sensor front ends for noninvasive measurement of blood constituents
US8700111B2 (en) 2009-02-25 2014-04-15 Valencell, Inc. Light-guiding devices and monitoring devices incorporating same
US8788002B2 (en) 2009-02-25 2014-07-22 Valencell, Inc. Light-guiding devices and monitoring devices incorporating same
US10216893B2 (en) 2010-09-30 2019-02-26 Fitbit, Inc. Multimode sensor devices
US8888701B2 (en) 2011-01-27 2014-11-18 Valencell, Inc. Apparatus and methods for monitoring physiological data during environmental interference
WO2013016007A2 (fr) 2011-07-25 2013-01-31 Valencell, Inc. Appareil et procédés d'estimation de paramètres physiologiques temps-état
EP2739207B1 (fr) 2011-08-02 2017-07-19 Valencell, Inc. Systèmes et méthodes d'ajustement d'un filtre variable en fonction de la fréquence cardiaque
US9005129B2 (en) 2012-06-22 2015-04-14 Fitbit, Inc. Wearable heart rate monitor
US8948832B2 (en) 2012-06-22 2015-02-03 Fitbit, Inc. Wearable heart rate monitor
KR101975090B1 (ko) * 2012-10-26 2019-05-03 나이키 이노베이트 씨.브이. 심박수 정보를 이용한 운동 수행 모니터링 시스템
CN103919536B (zh) * 2013-01-15 2018-05-01 飞比特公司 便携式生物计量监测装置及其操作方法
US9039614B2 (en) 2013-01-15 2015-05-26 Fitbit, Inc. Methods, systems and devices for measuring fingertip heart rate
CN110013240A (zh) 2013-01-28 2019-07-16 瓦伦赛尔公司 具有与身体运动脱开的感测元件的生理监测装置
US10512407B2 (en) 2013-06-24 2019-12-24 Fitbit, Inc. Heart rate data collection
US10554802B2 (en) 2013-10-04 2020-02-04 Js Products, Inc. Systems and methods for identifying noises with wireless transducer
CN104545836A (zh) * 2013-10-18 2015-04-29 北京大学深圳研究生院 一种心脏功能监测仪器
US9936886B2 (en) 2014-06-09 2018-04-10 Stmicroelectronics S.R.L. Method for the estimation of the heart-rate and corresponding system
WO2016022295A1 (fr) 2014-08-06 2016-02-11 Valencell, Inc. Modules à capteurs physiologiques optiques avec réduction du bruit de signal
US9668700B2 (en) * 2014-09-09 2017-06-06 Heartflow, Inc. Method and system for quantifying limitations in coronary artery blood flow during physical activity in patients with coronary artery disease
KR102415906B1 (ko) * 2015-04-14 2022-07-01 엘지이노텍 주식회사 인체 착용 장치 및 이의 동작 방법
DE102015106995A1 (de) * 2015-05-05 2016-11-10 Osram Opto Semiconductors Gmbh Optischer Herzfrequenzsensor
CN104784776A (zh) * 2015-05-19 2015-07-22 京东方科技集团股份有限公司 一种输液系统
US10448871B2 (en) 2015-07-02 2019-10-22 Masimo Corporation Advanced pulse oximetry sensor
EP3310252B1 (fr) * 2015-08-12 2021-09-22 Valencell, Inc. Appareils de détection de mouvement par opto-mécanique
CN106551690A (zh) 2015-09-30 2017-04-05 齐心 一种生命体征测量装置及方法
US10595785B2 (en) 2015-10-01 2020-03-24 Silicon Laboratories Inc. Plethysmography heart rate monitor noise reduction using differential sensors
US10945618B2 (en) 2015-10-23 2021-03-16 Valencell, Inc. Physiological monitoring devices and methods for noise reduction in physiological signals based on subject activity type
WO2017070463A1 (fr) 2015-10-23 2017-04-27 Valencell, Inc. Dispositifs de surveillance physiologique et procédés d'identification de type d'activité chez un sujet
US11206989B2 (en) 2015-12-10 2021-12-28 Fitbit, Inc. Light field management in an optical biological parameter sensor
US10568525B1 (en) 2015-12-14 2020-02-25 Fitbit, Inc. Multi-wavelength pulse oximetry
US10433739B2 (en) 2016-04-29 2019-10-08 Fitbit, Inc. Multi-channel photoplethysmography sensor
US10966662B2 (en) 2016-07-08 2021-04-06 Valencell, Inc. Motion-dependent averaging for physiological metric estimating systems and methods
US11419509B1 (en) * 2016-08-18 2022-08-23 Verily Life Sciences Llc Portable monitor for heart rate detection
US11051706B1 (en) 2017-04-07 2021-07-06 Fitbit, Inc. Multiple source-detector pair photoplethysmography (PPG) sensor
US11488166B2 (en) * 2019-01-02 2022-11-01 Capital One Services, Llc System and method for biometric heartrate authentication

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8019400B2 (en) * 1994-10-07 2011-09-13 Masimo Corporation Signal processing apparatus
EP1485009A1 (fr) * 2002-02-22 2004-12-15 Datex-Ohmeda, Inc. Surveillance de parametres physiologiques basee sur des variations dans un signal de photoplethysmographie
CN1507833A (zh) * 2002-12-16 2004-06-30 中国人民解放军空军航空医学研究所 一体化动态生理参数检测记录方法及装置
US7625344B1 (en) * 2007-06-13 2009-12-01 Impact Sports Technologies, Inc. Monitoring device, method and system
US7468036B1 (en) * 2004-09-28 2008-12-23 Impact Sports Technology, Inc. Monitoring device, method and system
US7946994B2 (en) * 2004-10-07 2011-05-24 Tensys Medical, Inc. Compact apparatus and methods for non-invasively measuring hemodynamic parameters
US8419649B2 (en) * 2007-06-12 2013-04-16 Sotera Wireless, Inc. Vital sign monitor for measuring blood pressure using optical, electrical and pressure waveforms
US8700111B2 (en) * 2009-02-25 2014-04-15 Valencell, Inc. Light-guiding devices and monitoring devices incorporating same
US8738118B2 (en) * 2009-05-20 2014-05-27 Sotera Wireless, Inc. Cable system for generating signals for detecting motion and measuring vital signs

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
None

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ITMI20130104A1 (it) * 2013-01-24 2014-07-25 Empatica Srl Dispositivo, sistema e metodo per la rilevazione e il trattamento di segnali di battito cardiaco
WO2014115075A1 (fr) 2013-01-24 2014-07-31 Empatica Srl Dispositif, système et procédé de détection et de traitement de signaux de rythme cardiaque
US9833155B2 (en) 2013-01-24 2017-12-05 Empatica Srl Device, system and method for detection and processing of heartbeat signals
AU2014208391B2 (en) * 2013-01-24 2017-12-14 Empatica Srl Device, system and method for detection and processing of heartbeat signals
US10285602B2 (en) 2013-01-24 2019-05-14 Empatica Srl Device, system and method for detection and processing of heartbeat signals
US11389074B2 (en) 2013-01-24 2022-07-19 Empatica Srl Device, system and method for detection and processing of heartbeat signals

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